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Fri, 10 Oct 2025 03:53:44 -0700 (PDT) Received: from dev-linux.homserver.local ([51.154.249.132]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-46fb4983053sm38889925e9.8.2025.10.10.03.53.43 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 10 Oct 2025 03:53:44 -0700 (PDT) From: Vaibhav Gupta To: Michael Buesch Cc: Vaibhav Gupta , Bjorn Helgaas , Linus Walleij , Bartosz Golaszewski , linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v1] driver: gpio-bt8xx: use generic PCI PM Date: Fri, 10 Oct 2025 10:53:36 +0000 Message-ID: <20251010105338.664564-1-vaibhavgupta40@gmail.com> X-Mailer: git-send-email 2.51.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Switch to the new generic PCI power management framework and remove legacy callbacks like .suspend() and .resume(). With the generic framework, the standard PCI related work like: - pci_save/restore_state() - pci_enable/disable_device() - pci_set_power_state() is handled by the PCI core and this driver should implement only gpio-bt8xx specific operations in its respective callback functions. Signed-off-by: Vaibhav Gupta --- drivers/gpio/gpio-bt8xx.c | 27 +++++++-------------------- 1 file changed, 7 insertions(+), 20 deletions(-) diff --git a/drivers/gpio/gpio-bt8xx.c b/drivers/gpio/gpio-bt8xx.c index 05401da03ca3..e8d0c67bb618 100644 --- a/drivers/gpio/gpio-bt8xx.c +++ b/drivers/gpio/gpio-bt8xx.c @@ -224,9 +224,9 @@ static void bt8xxgpio_remove(struct pci_dev *pdev) pci_disable_device(pdev); } =20 -#ifdef CONFIG_PM -static int bt8xxgpio_suspend(struct pci_dev *pdev, pm_message_t state) +static int __maybe_unused bt8xxgpio_suspend(struct device *dev) { + struct pci_dev *pdev =3D to_pci_dev(dev); struct bt8xxgpio *bg =3D pci_get_drvdata(pdev); =20 scoped_guard(spinlock_irqsave, &bg->lock) { @@ -238,23 +238,13 @@ static int bt8xxgpio_suspend(struct pci_dev *pdev, pm= _message_t state) bgwrite(0x0, BT848_GPIO_OUT_EN); } =20 - pci_save_state(pdev); - pci_disable_device(pdev); - pci_set_power_state(pdev, pci_choose_state(pdev, state)); - return 0; } =20 -static int bt8xxgpio_resume(struct pci_dev *pdev) +static int __maybe_unused bt8xxgpio_resume(struct device *dev) { + struct pci_dev *pdev =3D to_pci_dev(dev); struct bt8xxgpio *bg =3D pci_get_drvdata(pdev); - int err; - - pci_set_power_state(pdev, PCI_D0); - err =3D pci_enable_device(pdev); - if (err) - return err; - pci_restore_state(pdev); =20 guard(spinlock_irqsave)(&bg->lock); =20 @@ -267,10 +257,8 @@ static int bt8xxgpio_resume(struct pci_dev *pdev) =20 return 0; } -#else -#define bt8xxgpio_suspend NULL -#define bt8xxgpio_resume NULL -#endif /* CONFIG_PM */ + +static SIMPLE_DEV_PM_OPS(bt8xxgpio_pm_ops, bt8xxgpio_suspend, bt8xxgpio_re= sume); =20 static const struct pci_device_id bt8xxgpio_pci_tbl[] =3D { { PCI_DEVICE(PCI_VENDOR_ID_BROOKTREE, PCI_DEVICE_ID_BT848) }, @@ -286,8 +274,7 @@ static struct pci_driver bt8xxgpio_pci_driver =3D { .id_table =3D bt8xxgpio_pci_tbl, .probe =3D bt8xxgpio_probe, .remove =3D bt8xxgpio_remove, - .suspend =3D bt8xxgpio_suspend, - .resume =3D bt8xxgpio_resume, + .driver.pm =3D &bt8xxgpio_pm_ops, }; =20 module_pci_driver(bt8xxgpio_pci_driver); --=20 2.51.0